Computing and printing machine.



' F. M. CARROLL. COMPUTING AND PRINTING MACHINE.

APPLICATION FILED OCT. 26,1906.

Patented Mar. 31, 1914.

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P. M. CARROLL.

COMPUTING AND PRINTING MACHINE.

APPLICATION TILED OCT. 26, 1906.

Patented Mar. 31, 1914.

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APPLICATION FILED OCT. 26, 1906.

Patented Mar. 31, 1914.

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Patented Mar. 31, 1914.

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APPLICATION FILED OCT. 26, 1906.

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F. M. CARROLL.

COMPUTING AND PRINTING MACHINE.

APPLICATION FILED 0OT.26, 1906. 1,091,482. Patented Mar. 31, 1914.

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F. M. CARROLL.

COMPUTING AND PRINTING MACHINE.

APPLICATION FILED OCT. 26, 1906.

' Patented Mar. 31, 1914.

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P. M. CARROLL.

COMPUTING AND PRINTING MACHINE.

APPLICATION FILED OCT. 26, 1906.

Patented Mar. 31, 1914.

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COMPUTING AND PRINTING MACHINE.

APPLICATION FILED OCT. 26, 1906.

Patented Mar. 31, 1914.

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P. M. CARROLL.

COMPUTING AND PRINTING MACHINE.

APPLICATION FILED 0012s, 1906.

1,091,482. Patented Mar.31, 1914.

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both classes.

' subtraction UNITED STATES PATENT OFFICE.

FRED MERCHANT CARROLL, OENEW HAVEN, CONNECTICUT, ASSIGNOR, BY MESNE'ASSIGNMENTS,, TO THE WHITE ADDING MACHINE COMPANY, OF NEW HAVEN,

CONNECTICUT, A CORPORATION OF CONNECTICUT.

oo'I rUTING" AND PRINTING MACHINE.

Specification of Letters Patent.

Patented Mar. 31, 1914.

Application filed October '26, 1906. Serial No. 340,636.

- To all whom. it may concern:

Be it known that I, FRED M. CARROLL, a.

Machines, of which the following is a full,

clear, and exact description.v

My invention relates to computing andprinting machines, and has for itsobject to provide in such machines a new and improved mechanism formaking printed records having distinguishing characteristics.

It further has for its object to provide means for changing the positionof the ribbon whenever theadjustment of the machine is changed fromaddition position to osition, so that items of the two classes additionand subtraction) may be printed by portions of the ribbon havingdifferent colors or characteristics. Items of the two classes will,therefore, have distinguishing characteristics so as to be readllyidentified upon the permanent record.

A further object of my invention is to provide means for printing itemsof two classes (addition and subtraction) not only in different colorsbut in conjunction with other distinguishing characteristlcs, such, forinstance, as a distinguishing mark or marks placed adjacent to items ofone or; This results not only in in creasing the distinguishingcharacteristics; when a two'c'olored ribbon is used, but alsoj enablesdistinguishing characteristics to be. readily impressed when a twocolored rib-j the same.

bon is not available.

Afurther object of' my invention is to provide means for printing a signindicat-j ing totals and to employ to some extent for the ribbonchanging, the elements which are employed for bringing thetotal-distinguish- 1 ing mark into printing line. The printing of theaddition and subtraction items in difl ferent colors is very desirablesince it makes it unmistakable at a glance to which class any itemsbelong, the difierence being even more conspicuous than if thesubtracted. items were in the-same color as the other' for bringing theparts into proper relation -for total printing and other associateddetails. Fig. 9 is a plan view of segregated the usual business customto use red for.

credits, and by the use of a'black and red ribbon, the permanent recordof my machine can be'made to conform to this business custom.

The following is a description of an embodlmentof my invention asapplied to the machine shown and described in Patent No. 789,409,granted the 9th of May, 1905, reference being bad to the accompanyingdrawings, 111 which parts shown and described in the patent abovementioned are referred to by the reference -numerals as are used in saidpatent.

In these drawings Figure 1 is a front elevation of a machine embodyingmy invention. Fig. 2 is a right-hand side elevation. Fig. 2 is a detail.Fig. 3 is a left-hand side elevation. Fig. 4 is a vertical section fromfront to rear of the machine. Fig. 4 is a plan view of a detail. Fig. 4is a vertical section of parts shown in said detail and associatedparts. Fig. 5 is a view of the spring-drum, controller, winding segment,and associated parts, looking from the right; Fig. 5 is a detail of thecontroller; Fig. 5" is a pivoted tripping plate on the controller; Fig.5 is a section of the springdrum. Fig. 6 is a right-hand view ofthedistributing cam shaft and associated gearing. Fig. 6 is a plan view ofthe same. Fig. (i is a view of the item-segment cradleliftinlgmechanism. Fig. 6 is a view showing t erelation of the rack-bars,item-segment and accumulating wheels. Fig. 6 is a view of the right-handcradle-lifting cam. Fig. 7 is a plan view of the accumulating wheel.Fig. 7 is a sectional view of two of said wheels. Fig. 7 is a sideelevation of Fig. 7 is a plan view of the carrying wheels and certaincooperating parts. F igs; 7 7*, 7, 7?, 7, 7, 7 7 are certain details ofthe carrying mechanism. Figs. 7', 7", are details of the totalizingmechanism. Fig. 8 shows the relation of the totalizing key-operatinglevers and interlocks controlled thereby. Fig. 8* is a front view of analining device operated by the totalizing key. Fig. 8 is a sideelevation showing in detail the relations of the rack-bars and thetotalizing-key rack-bar interlock. Fig. 8. is a detail showing meanspartsin their operative relations by which my invention is incorporatedin the ,ma-

Fig. 9 is aldetail view of one por- Fig. 10 is a side elevation of theparts shown in Fig. 9. Fig. 10 shows a record made by the machineembodying m invention, dots being used to indicate a di ferent colorfrom that indicated by the solid lines. Fig. 11 is a rear ,view of thetypewheels, ribbon and certain associated parts segre ated from the restof the machine.

Re erring more particularly to the drawings, (Figs. 9, 10, 11), 602,'1sa movable platen adapted to carry paper on which the record is to bemade. 600 are numeral printing type members mounted side by side androtatable about the same axis. A is a bichrome ribbon carried byprojections A on two uprights B B, mova 1c in vertical bearings in themachine frame, and normally drawn into their lower posit on by thesprings b. C C are two arms rigidly connected together with a rock shaftD and engaging the uprights B B carrying the ribbon. The rock shaft isnormally held in retracted position by the springs Q is a projectionupon the arm O, whlch 1s enga ed by the step E carried by a lmk F, whichis pivoted to a disk G forming part of a rotating member G, preferably atype member, mounted on the same axis with the numeral-printing typemembers 600. This rotatable member G is moved by the lever H carried bythe rock shaft I journaled in the frame and is normally held in itsimtial position by the springs I. The rock shaft I has a depending arm Jto the lower end of which is connected a link K. This link K has adownward projection L, which.

tion. In order that the parts may be nor-' mally held in additionposition, I provide a spring N, which, tends to rotate the shaft untilthe shoulder P engages the stop 0, Fig. 9, which position corresponds tothe ad ition-position. When the shaft N is rotated in the oppositedirection until the shoulder P engages the stop O, the machine isadjusted for subtraction. This rotation of the shaft N is-brought aboutby the manual operation of the crank N mounted on said shaft and islimited by two stops 1:. 91.. When the shaft N is in one extremeposition, the machine is adjusted for addition. When in the otherextreme position, the machine is adjusted for subtraction. Whenever thecrank is released, the adjustment of the parts is automatically changedfrom subtraction position to addition position. When it is in theaddition position, the step E is lowered and the ribbon .A is drawndownward. When, however, the shaft is'turned so as to be in subtractionposition, the pin M engages the projection L upon the link K and movesthe link and the connecting parts, so that the step E is raised intoengagement with the pro ection C lifting the same and the arms C C, andalso the rlbbon so as to bring the lower portion of the ribbon into theprinting line. The upper and lower portions of the ribbon being ofdifferent colors, the addition .and subtraction items will be printed indifferent colors as indicated by the dots in Fig. 10. The shaft N has aworm engaging a screw thread R in the stationary frame S, and as itrotates is' thereby moved longitudinally to a small extent. Thismovement shifts the lever T pivoted at It, so that its inner end shiftsthe rod 54 which in turn shifts the gear 503, whose position determineswhether the machine shall operate for additionor for subtraction.

The link K is provided with an elongated slot '70, in which works a pinto on the upper end of the lever U. This lever U is moved by thespring-retracted totalizing key 863 and controls the total printing, asdescribed in my prior atent.- The slotk is of such length that t e pin uon the upper end of the lever U does not'engage the outer end of theslot is, so as to move the link K until the totalizing key is near theend of its inward throw. At this time, engagement takes place and thelink K is moved slightly, re

sulting in a slight movement of the type also has a distinguishing markprinted opposite it. This isof advantage in the machine, since in casebichrome ribbons are not available, the machine with an ordinary ribbonwill distinguish between added and subtracted items. When a bichromeribbon is used, it may be divided longitudinally into two parts, eachpart being of a different color.

Referring more particularly to the complete machine, there are a set ofnumeral 177, 2, 3, 47,, 5, 6, 7, 8 and 9 (Figs. 1, 2, 3 and 4), which Iuse in setting up the items. There are also two lower keys, the righthand one being a forward space-key and also serving as a zerokey, whilethe left hand one is a back space-key (see Fig. 1). There are also atotalizing-key T and other keys which it is unnecessary to mention.

Referring to the mechanism, 1 and 2 are the right and left outsidemembers of the frame of the machine. 3 and 4 are the right and leftinside members of the frame (Fig. 1). In the outside members 1 and '2 ismounted a driving shaft 5, having upon its right hand end a main drivinggear 6, wit-h w ich engage the gears 7 and 8 for transmitting motion todifferent parts of the machine for various purposes to be hereinafterdescribed. 7

The main driving shaft 5 carries upon its left hand end a spring casingor drum 9 containing a driving spring 10 and having upon a flange in itsperiphery two opposite notches 11-11, with which aprojection 12 on thecontroller 13 engages. The shaft of this controller has one end mountedin the left hand outside frame 2 and its other end is mounted in theleft hand inner frame 4 and is normally held in contact with the drum bya spring 13 as hereinafter described. When the controller 13 is moved soas to withdraw the projection 12 from one of the notches 11 upon thespring drum, the

spring 10 causes the main shaft 5 to revolve,

until, the projection 12 engages with the other notch 11. A pin 14(Figs. 3 and 5) upon the spring casing engages with a rearwardlyprojecting arm 15 upon the controller shaft at such a time as topositively force the projection 12 downward so as to cause it to engagewith the next succeeding notch 11. The spring 10 within the casing hasits outer end secured to the spring casing by a pin 10 at its inner endconnected with an inwardly extending boss 10* upon the drum head 16.This drum head carries two pawls 17-17 which by means of springs 18 arecaused to engage with notches 19-19 upon a movable ratchet wheel 20,also mounted upon the shaft 5. This movable ratchet wheel is formed witha gear 21, with which meshes a curved rack 22 (Figs. 3 and 5) mountedupon the shaft 23, which is journaled in the two outside members of theframe. The rack 22 is retracted to its normal position by a spring 24.The rack 22 is rigidly attached to the shaft 23 to the right hand end ofwhich is connected an operating handle 26. The drum-head 16 has upon itratchet teeth 16 engaged by a laterally projecting stud 27 on a pawl 27,which by a partial throw of the rack 22 prevents the drum-head fromturning backward. It also carries two lugs 16, which upona completethrow of the curved rack 22 engage with the end of the pawl 27, to holdthe drum-head in position. As soon as the curved rack 22 is released, itis at once retracted by the spring 24. After a complete revolution hasbeen made, and the curved rack 22 has been retracted the next forwardmovement of the curved rack first causes one of the lugs 16? of thedrum-head to engage andlift the tripping plate 28,

which is pivoted to the end of the curved arm 29 carried by thecontroller 13. vA furdistributing ther movement of the curved rack 22resulting in a further movement of the lug 16 moves the controllerso asto release the projection 12 from the notch 11 of the spring drum,permitting the drum to revolve under the action of the. main spring. Thetripping plate 28 is retracted by a spring 30 and the parts are soproportioned that as soon as the lug 16- has moved sufficiently tovcause the tripping plate to move the controller so as to release theprojection 12 from the notch 11, the point of thetripping plate willescape the lug 16", so that it can not be again engaged thereby so as toagain.

trip the controller until the handle 26 has main spring and cause thenext lug 16" to engage the lower sides of the tripping plate 28 (seeFigs. 3 and 5).

The gear 7 is rigidly mounted upon a shaft 31 journaled in the righthand inner frame and the right hand outer frame. Upon this shaft arealso mounted two mutilated gears 32 and 33 and a complete gear 34 (Figs.1, 2 and 6). The complete gear 34 meshes with the inner member of astraddle-gear 35 mounted upon the shaft 54 journaled in the inner frames3 and 4. This gear straddles a cam disk 39. The outer member of thestraddle gear 35 engages with a gear 38, which is mounted upon the camdisk 39, which is rigidly connected to another cam disk 40, .for thepurpose hereinafter described. The left hand mutilated gear 32 transmitsmotion 'to a small gear 41, having a stop surface, and mounted upon theshaft 42, journaled in the right hand inner and 'outer frames. The righthand gear 33 engages with a gear 43 mounted upon its stud 44 carried bythe right hand inner frame andhaving a stop surface 45. This gear 43through a connection rod 45, rock shaft 47 and rod 48 transmits areciprocating motion to a cradle 49 carrying the axially mounted itemdevices or circuits 50, as hereinafter described.

I tem segment mechanism.,-The item-segments 50, above referred to, Figs.1 and 4, consist of a series of nine toothed segments axially mounted soas torevolve independentlyupon a shaft 51 of the cradle 49, which iscarried at the extremities of the arms of the yoke 53. This yoke ismounted so as to be free to turn upon the shaft 54 carried by the twoinner frame members. The itemsegments 50, mounted upon the shaft 51,have disk-like extensions cut away at 55 and 56, so as to each have twospokes connecting with the central bearing portion of the hub 57, Fig.6. Through the openings 55 of the series of item-segments 50 passes acurved frame 58, supported at each extremity by circular end pieceswhich are rigidly mounted upon the shaft 51, the whole constituting acradle for the item-segments.

The curved frame 58 carries two series of projections 58" and 58', whichform grooves in which the inner surfaces of the rims of the severalitem-segments 50 bear and by which the item-segments are guided and heldagainst lateral movement, so as not to come into too great frictionalcontact with one another. The circular end pieces of the cradle 49 alsocarry a universal locking bar or yoke 60 supported at each end by armspivoted to the end pieces at 61. This u n1- versal locking bar carries arod 62, wh1ch engages the teeth 63 on the inner periphery of each of theitem-segments 50, the space 56 in the item-segments affording sufiicientroom for the play of the said locking bar. The end 64 of this lockingbar passes through a slot in the right hand circular end piece of thecradle 49, on which end is a friction roller 62*, Fig. 6 which is thereengaged by the cam surface 65 of the left hand face of the cam disk 40,Figs. 6 6", and so actuated thereby as to be at times brought intoengagement with the teeth 63 of the Itemsegments and disengagedtherefrom, as Wlll be hereinafter described. The left hand circular diskof the cradle 49 is formed with a boss 66,- Figs. 3 and 6 to which ispivotally connected one end of a connecting link 48, above referred to.

' Mechanism f01' positioning the item-segments.-The item-segments50 eachhave a plain circumferential extension 67, upon the upper front portionof whose periphery is preferably a series of numerals from 0 to 9 i 1,2, 3, 4:, 57,, 6, 7: 8 and 9, one of which is visible through a sideopening in the face plate 67*, Figs. 4 and 6. On the lower back portionof the periphery of each item-segment, there is a blank space 68. Thelower front peripheral portion of each item-segment carries a series ofteeth 69, which engage with a corresponding number of teeth 70 upon thesliding item devices or rack-bars 71, Figs. 5, 6, 6 and 6, there beingone sliding rack-bar for each item-segment. These sliding rackbars aresupported in spacing notches 72 upon the cross pieces 73 and 74supported by the inner frame, and are also guided and supported attheirupper edges by spacing notches 75 in the cross bar 76,likewise'connected to the inner frame members. Each of these rack-bars71 is provided with a retracting spring 77, the forward end of which isconnected to the forward end of the rackbar and the rear end of which isconnected to a cross-bar 78, carried by the inner frame. Each of therack-bars 71 carries-a pawl 79, which is normally held in depressedposition, as shown by the spring 80, so as to engage against a stopsurface or abutment 81 of a table 82. In the operation of the machinesome or all of these pawls 79 are released by the movement of the keysallowing the rack-bar 71 to be drawn backward by their respectivesprings 77 until stopped by one of the series of vertically movablestops 110, Figs. 4 and 4", the roper one of which is brought intoposition y the manipulation of the numeral operating keys and theautomatic action of the column-selecting devices, to be hereinafterdescribed.

The operating keys of the machine, Fig. 1, may be divided into twogroupsthe upper group, which corresponds to the numerals to be set upand are numbered 1, 4 2 17 ca 3 ,7, 4e 4 v, c 5 a, t 6 7 4: 7 77, cc 8 nand 9, and the lower group of keys, consisting of the" forward spacekey, the back space key, the totalizing key T and other keys. Theforward space key serves also as the zero key. Each of the numeral keylevers 100 is pivoted on a bar 101 mounted in the key frame 102, securedto the front of the main frame, Fig. 4. Each numeral key is providedwith a downward projection 103, to which is pivoted the forward end ofthe connecting rod 104, the other end of the connecting rod beingpivoted to the lug 105 upon a corresponding lifter, there being oneconnecting rod and lifter for each numeral key. These lifters eachconsist of a crossbar 107, supported by two pivots 108, to the innerframe and provided with a downwardly projecting lug 105, to which theconnecting rod 104 is connected. The connecting rod 104 carries a sto104 against which presses one end of a cofied spring 104 the other endengaging with an abutment 104 in such a manner that whenever a numeralkey is depressed and released, the spring 104 returns it and thecorresponding rod to normal position. Co-acting with the lifters are aplurality of series of vertically moving stops 110, there being for itemsetting purposes the same number of series of these stops as there areitem-segments 50 and rackbars 71 and in addition, two series which areused in printing dates. There are nine stops 110 in each series,corresponding to the 4 1 ,7 C 2 77, 3 77 4 4: 7, C 5 77, t 6 ,7, 7, 877and 9. There is for each series of stops 110 a sliding plate 111, havingrecesses 112, Figs. 4 and 4", through which the lower ends of thesestops 110 pass, the downward movements being limited by the projections110 on the stops. These plates 111 are pressed forward by springs 111bearing against their rear ends and are each connected by a connectingrod 113 with the depending arm of one of a series of dogs 114, Figs. 4and 4 mounted upon the shaft 115, journaled in a forward selector-shaftframe 116. The upper arms of the dogs 114 are in post tion to besuccessively engaged by the teeth 117 on the selector-shaft 118, carriedby the selector-shaft frame 116, as shown in Fig. 4. When a tooth 117 onthe selector-shaft 118 engages with the upper arm of one of the innerrame and servirgg dogsl 114 it moves it slightly downward, therebyforcing the lower end rearward and causing the corresponding slidingplate 111,

carrying the lower ends of the vertically movable stops 110, to moverearwardly that stop, so that its upper end rises abovethe plate or stoptable 82 through holes 120 therein, which act as upper guides. The

stops 110 are each provided with a shoulder- 110, upon which normallyrest pins 121, carried by a stop lock plate 122, pressed forward by aspring 122. This stop lock plate 122 has a notch 123 engaging with theupper ed of a cross bar 124, carried by the to prevent the forwardmovement of an stop lock plate 122 so long as it is in itsdepressedposition. This stop lock plate has its rear end mounted uponone end of the equalizer 125, Figs. 4, 4' and 4", and its forward endcarried by one end of an equalizer 126, the lower arms of theseequalizers being connected by an equalizer, rod 127, the purpose beingto hold the stop lock plate 122 always parallel to the same plane. Thesprings 128 bearing against the lower ends of the rearequalizer tend tokeep the stop lock plates depressed.

Whenever one of the stops 110 is forced upward by its lifter, theshoulder 110 engages with the pin 121 corresponding thereto and liftsthe entire stop lock plate,so that all the other pins 121 are raisedabove projections 110* of the stops and also so that the stop lock plateis disengaged from the looking face of the cross-bar 124, as shown inFig. 4. At the same time the upper face or projection 129 upon the stoplock plate engages with the corresponding awl 79 and moves it out ofcontact with t e abutment 81 on the edge of the table 82. This permitsthe corresponding rack-bar 71 to be moved rearwardly under the influenceof its spring 77 until it engages with the stop 110, which has beenelevated, as shown in dotted lines, Figs. 4 and 4". The rack-bar isthereby retraoted a distance corresponding to the numeral key depressedand the item-segment 50 meshing therewith is revolved a correspondingdistance. I V

As above stated, the series of stops which is in position to be actuatedby the lifters is determined by the position of the selectorshaft 118.Among the many advantages of this construction is the uniformity ofaction of all the numeral keys the touch and throw being substantiallythe same in all cases. After movement of the hand lever 26, Fi 2, whichbrings themachine to its norma position readyfor the setting up of anitem on the item-segments 50, the selector-shaft 118 stands in aposition repre-' sented. by a spot'upon the'traveling indicator 130,Figs. 1 and 4, consisting of a drum carr ing series of spots arranged ina spiral. T is osition is determined b 'a stationar in icator, s0-called131,1 1 .and 2, w ich may be manually set up by a knob 132 through gears132", 132", 133, 133,

to determine the column in which the first numeral is to be set up. Thisis accomplished by this knob and the cylinder 133, connected to the gear133 and having spirally arranged depressions 134, adapted to take thenose 135, of any one of a series of stop members or dogs 136 movablymounted on a shaft 137, carried b the selectorshaft and so located thatt eir rearward and downward ends 138 fall into the ath of correspondingteeth of the selector-s aft 118, Fig. 4, thus constituting a variablestop 7 for the selector-shaft. The spiral arrangeinent of the depression134 on said drum allows the upper end of only one of these dogs to entera depression at a time, and hence allows the lower end of only one ofthese dogs to come into the path of the tooth' of the selector-shaft atany given time. The normal position of this depressed stop 136 istherefore such as to interrupt the motion of the selector-shaft 118which thus determines the initial position, or the position of theinitial figure in the item. This is indicated to the eye by thetraveling indicator 130,

which is geared to'the selector-shaft 118, by v the segmental-gear 139and moves synchronously therewith. To disengage the selectorshaft 118fromthe dog 136, which determines its initial position at the beginningof an operation of setting an item, I provide a yoke 140, looselymounted on the shaft 137 and engaging rearward projections 142 on allthe key-bars and also engaging a forward projection 143 on the'upperpart of any do whose nose has entered one of the splral depressions ofthe stationary indicating drum 131. When the first key is depressed,this yoke throws the rearwardly projecting member of the depressed dog136 out of engagement with'the tooth on the selector-shaft 118 allowingthe selectorshaft to come under the control of an escapement consistingof a ratchet wheel 144 and pallet 145, Fig. 2, the latter consisting oftwo pivoted members and a restraining spring 145". The pallet isconnected by a link 146 with a umversal yoke or bar 146 and pivoted at1246 and connected to the escapement, which yoke or bar 146 is engagedand moved backward by the downward projections 103 on the numeral keysand also on the zero key. The universal bar is retracted by a spring146. -Every backward sented by one tooth of the said ratchet 144,

it being impelled by actuating segmental skeleton gear-wheel 139, Fig.3, mounted on a stud on the selector frame and meshing therewith, and aspring 139, one end of which is connected with said wheel, while theother is connected to a stationary partof the frame. The spring 139 isput under tension when the selector-shaft 118 is reset to its full limitof backward motion, as

hereinafter described. The resetting of the selector-shaft to its fulllimit is necessary to provide for any large number that might bedesirable to set up on the item-segment 50. Provided, however, thenumbers to be set up are small, the selector-shaft and its correspondingindicating-drum return automatically to the position previouslydetermined by the stationary indicator-drum 133 and its stop-dogs 136.To avoid having to operate the spacing key through the intermediatepositions between the extreme left position and the initial figure inthe items to be set up, I provide on the right hand end of theselector-shaft 118 a separate and extra proj'ection 147, Fig. 2, not inthe sliding rack series which raises a rearwardly projecting arm'148 onthe hub 149, which in turn carries a fiat spring 150 so adjusted as toengage a projecting arm 151' on the pivoted releasing member 152 of theescapement pallet145, so that the extension 151 being thereby depressed,the fiat spring 150, put into tension by theturning of the hub 149,snaps into engagement'with the notch 152 on the extension 151 of thereleasing member of the escapement pallet 145, Fig. 2, and holds it outof engagement with the ratchet wheel 144. The tension of the actuatingspring 139, at the left, Fig. 3, revolves the selector-shaft 118 untilit comes to a stop against the stop dog 136, whose nose is in adepression in the indicator drum. To prevent the escapement from workingin resetting the selector, I utilize the same forward projection 151 onthe releasing me1nber of the escapement. Under these conditions, ofcourse, the selector-shaft 118 in being reset goes into its extremeleft-hand position but the lug 147 at the right-hand end, Fig. 2 thencomes into useful play. throwing down the spring catch or stop 150 intothe path of the forward projection 151 and holding the releasing member152 of the escapement out of engagement until the spring catch/iswithdrawn upon the operation of a key, permitting the releasing memberto again come into engagement with the ratchet-wheel.

In order to cause the releasing member 152 of the escapement to comeinto contact with the spring-catch 150, whose function it is to hold thereleasing member 152 out of engagement with the ratchet-wheel, I pro--vide a finger 160, Figs. 2, 2, projecting from r releasing member 152 toallow the spring detent 150 to fall into the notch 152, provided for it,thereby holding the releasing member 152 out of engagement with theratchet 144.. The pivoted member 161 is provided with a spring 162 so asto yield and permit the tooth 160 to pass freely in a reverse direction.

Spacing 7vey.The right hand key of the lower bank constitutes a spacekey and is also the zero key, Figs. 1 and 2. Its lever 100 is mountedupon the same shaft 101 as that which carries the levers of the numeralkeys and is connected by a link 100 with the lever 100, pivoted on; theshaft 153. The'lever 100 of this space key engages with the universalbar 146, the same as do the lovers of the numeral keys, and also withthe swinging locking yoke 163, so as to prevent other keys beingdepressed when it is partially depressed and so as not to be capable ofbeing depressed when other keys are partially depressed. It also has aforward projection the same as on the numeral keys which engages withthe universal yoke 140, which serves to withdraw the dog 136, blockingthe selector-shaft 118, the upper nose of which is within one of therecesses 134 inthe column-indicating drum, thereby performing all thespacing functions of a numeral key, though not acting on any stationaryitem devices.

Resetting stops before completion of 'a- 0- 2 cZe.The' arrangement ofthe parts as described allows for the immediate repositioning of thestop members 110, Fig. 4, of the rack-controlling devices immediatelyafter the beginning of a cycle of the machine, whereby another iteinmay,in effect, be potentially set up on the stop members 110 before therack-bars 71 have been reset, allowing for greater rapidity inoperation, it being understood that the rack-bars 71 are reset at thevery close of the cycle, it being necessary that they should be retainedin the positions in which they were originally set up until reengaged bythe item-segments near the end of the cycle. As before stated, thisretention is accomplished by the pawls 210 engaging with the notches ontheir under surfaces. The resetting rod 196, Fig. 2, through the mediumof its bell crank 193 when operated acts upon the devices for resettinthe stop lock plates 122 and stops 110 as wel as for re ositioning therac -bars 71, bringin the w ole into normal position ready fort esetting up of a new item. The

engaging arm of the bell crank 193 referred to enga ing both rock-shaftarm 192; which resets t e selector-shaft as heretofore described, andalso engaging'the forward arm or the rack-bar resetting bell crank 200which acting through the horizontal beam 202 and lever 204 throws theT-lever 206 and itshead 207; forward, carrying the rackbars 71 intoposition by its engagement with lugs 208. It is operated 'in the samemanner by the lugs 201 upon the main driving gears, Fig. 2, engaging thelever 200, and the downward and rearward projecting lug 221 on the samebell crank 193, engaging the projection 220 on the right hand bracketof. the frame 215", which is normally operated by the curved arm 215engaging with the lugs 201 upon the main driving gear 6 moving the lever214 so as to release the stoplock members 122.

It will be seen that after a rack-bar 71 has been retracted by itsspring and its pawl 79 rests against a stop 110, Fig. 4", the yoke 212being released by the lug 213 on the spring drum at the beginning of acycle of the machine, Fig. 5, will allow the spring-pressed detents 210to enter the notches 209 upon the-bars 71, and at the same time thecurved finger 215 engagin :1 lug 201 on the main driving gear will t rowdown the support- Y the several numeral keys will now raise into activeposition corresponding stops 110; but

they will not come into service until after the rack-bars 71 have beenbrought forward at the close of a cycle. When a stop 110 is raised, theupper and forward faces 129. of the stop lock plate 122, being in thesame plane with the top of the table 82, over which the rack-bar pawls79 pass, will then prevent the corresponding rack-bar pawl 79fromengaging the abutment 81, andwhen released by the retraction of theT-lever 206 at the end of a cycle,.it will fall back against the stop110-thus positioned, giving a new position to the correspondingitem-segment 50. If the stop 110 so raised during the cycle of themachine should be in front of the corresponding pawl 79, the pawl inbeing brought forward by its rack-bar 71 will drag over the'top of thestop, which 7 will not at .all interfere with .its correct working. Thus.at the end of a cycle a second item may be 'wholly or artiall set up onthe item-se ments 50, it being tiius possible to keep t e machine inconstant rotation. Y

' Aocwnuatz'ng mechanism-After an item has been set up on theitem-segments 50 a movement of the actuating crank arm 26 or the footlever, as the case may be, releases the spring drum 9 from the controlof the controller 13, communicating motion to the main driving gear 6 atthe right of the machine to the distributer sleeve 31, Fi 6, 6, by adirect connection with the pinlon 7 at the right hand end, which isfixedly mounted upon this sleeve, and to a mutilated gear 33, rigidlymounted thereon and engaging a corresponding gear 43, having a stop facedesigned in its rotation to communicate an oscillatin motion to thecradle 49, which supports t e item-segments. A small mutilated gear 32is also rigidly mounted on the distributing sleeve 31 and communicateswith a stop-face pinion 41, which communicatin with another pinionrevolves the carrying s aft 260 one complete revolution for every cycleof the machine. The distribut: ing sleeve 31 also carries a plain spurgear 34, meshing with an intermediate straddle gear 35 beneath it,having the cam 232 I ormed on its'inner face, which operates on .bars atthe proper time. This straddle gear 35 is so formed as to have aclearance space for the outer cam disk 39, carried by the item segmentshaft, upon which is mounted a driving gear 38, meshing with the outermember of the straddle gear 35 and through the means of the lifting cams39 on ,its inside face communicating an upward and rearward motionto-the body of item-segmentsin case the operation is subtraction. Asimilar cam disk 40, fixedly mounted with it and having a cam surface40, provides a similar motion to the body of item wheels 50 in case ofaddition. The connection between the cams 39? and 40*" and the frictionrollers 390, Figs. 6 6", and a sliding abutment is formed by theupturned lower end 392 of an arm 393,Figs. 6, 6 9, 10, depending fromthe slidin shaft 54, upon which the item-segment yo e 53 is pivoted,said arm of being engaged y e abutment 392 on idl but being capable.

. engaging therewith and actuated by a shaft N Figs. 9 and 10. Thisshaft carries a worm R, which engages a screw thread in the frameand canbe rotated by the handle N which rotation causes it to movelongitudinally. Thisshifts the pinion 503, hereinafter described. Theinner face of the broader of the two cam disks 39 and 40 mounted uponthe item-segment shaft, has formed in it also a cam groove 65 in whichoperates a friction roller .62, mounted,on the outer end of the bar 64,-of the swinging yoke forlocking the item segments, as before referredto. This yoke 60, as before described, is supported by the outer flangesof the oscillating cradle and provided with a locking bar 62, adapted toengage the in ternal teeth in the apertures within the item-segments.These teeth are ten in number, corresponding to the figures O to 9indicated on theperiphery of the item-segments. The throwing out of thecontroller 13,-Fig. 3, by the action of the hand lever 26, Fig. 2, setsin motion the main driving gear 6, which in turn revolves thedlstributer sleeve'31 and rotates through the. intermediate gears firstthe item-segment, lifting cam disks 39 and 40 by the means of theirattached gear. The intermediate gear 35 by means of its cam 232immediately throws down the rack-bar, locking yoke 230 into the teeth onthe upper side of the rack-v bars 71, securely holding the rack-bars 71in position until released by a further movement of the cam 232. At oneand the same. time the'cam on the inner surface of the cam 40 andadjacent to the item-segments 50 throws its engaging yoke 60 into theinternal'teeth 63 of the item-segments securing them in their setpositions. These two yokes,

the item-segment yoke 60 and the rack-bar yoke 230, operatesimultaneously and before the item-segments 50-are lifted out ofengagement with the rack-bars 71 and remain in engagement until theitem-segments again engage the rack-bars, thus insuring their return tothe proper relative positions of the item-segments and the rack-bars. Afurther movement of the item-segment cams 39 and 40 results in a raisingof the yoke 53 and cradle .49, supporting .the item-segments, togetherwith the cams themselves. In the case of addition this is a direct andcontinuous movement due to .the cams 40' on the outside face of the.broadcam disk 40, resulting at once in a contact. of the teeth of saiditem-segments with the teeth of the accumulator wheels 300 of theaccumulating mechanism. A further movement of the distributor sleeve 31brings into engagement the teeth of the outer or right hand mutilatedgear 33 with the teeth of its corresponding stop face pinion 43 in sucha way as to give the stop face pinion 43 a rotary motion, continuing inthis motion until one revolution is completed. This revolutionthroughthe means of the curved connecting rod 46, pivoted to the face ofthe pinion and having its lower end connected with an arm on theright-hand end of a rock-shaft 47, loosely sleeved on the center of themain driving shaft and carrying at its left hand end an arm connected bymeans of a curved link 48 with a stud 66 on the left hand end of theitem-segment cradle 49, communicates an oscillatin or rocking motion tothe cradle and t e item-segments. as a body. This brings into activeengagement with the accumulator wheels 300 of any of the'itemsegments 50which may have beenset up to represent anyone of the digits, resultingin a greater or less degree of movement of the accumulator wheels 300 soengaged. It

will be seen from the foregoing that in order to retain the accumulatorwheels 300 in the position 'iven them by the forward move ment of theitem segments, it is necessary to withdraw the item-segments 50 fromtheir engaging position into an intermediate position between theaccumulator wheels 300 and the rack-bars 71, where backward movement ofthe item segments may take place without effect either upon theaccumulator wheels or. the rack-bars. This is accomplished by means ofthe same lifting cam 40" on the right hand side of the wider of the twocam disks, Whichare mounted upon the item segment shaft. As the motionof the gear 43 with the stop face is continuous after once started, itwill be seen that this is rapid and continuous. After the completion ofthe revolution of the stop face gear 43, connected with the item segmentcradle 49, a further motion of the cam 40 results, bringing theitem-segments into engagement with the rack-bars in their originalstarting position and relation.

In the case of adjusting the machine for subtraction one turns thehandle N at the left of the machine, Figs. 1 and 9, so as to produce amovement of the shaft and the shifter arm 393 to the right, whichreleases the cam beam 397 used in addition and fixes in stationaryposition the cam, beam 397' to be used in lifting the item-segments forsubtraction. Now, a releasing of the main driving mechanism produces thesame rotary effects on the gears 33, 43 and cams 39, 40, with theresult, however, that the lifting motion first described in the case ofaddition is only partial-that is, the item-segments 50 are lifted onlysufficiently to become disengaged from the rack-bars 71 where they areheld until the completion of the forward rotation of the cradle 49,carrying with it the item segments 50. The cam 39 is so arranged thatthe continuation of its action then lifts the itenrsegments 50 intoengagement with the accunuilator wheels 300 and holds them there whilethe segments are re versely rotated, with the effect that theaccumulator wheels 300 are turned in the opposite direction from whatthey were in the case of addition, because they now engage with the itemsegments 50 during their backward movement. At the close of the movementof the stop-face gear 43, controlling the oscillation of the itemsegments in the case of subtraction, the cams let the item segments fallat bnce from engaging position with the accumulator wheels directly intothe engagement with rack-bars to complete their movement.

304 is a justifier acting on the teeth of the wheels 300. It is actuatedthrough the sprin connected lever 305 byv the cam 301 and a so thedepending arm 308 Figs. 8*, 8". The accumulator wheels 300, Fig. 4 arefurnished with fine teeth 309, which mesh with gear teeth on a set ofindicating idler wheels 311, which show definitely the position of theaccumulator teeth and by numbers upon their surfaces indicate the totalof the items set up.

Carrying mechanism, (Figs. 4, 6, 6*, 7, to 7.)The smaller mutilated gear32, mounted upon the distributer sleeve 31, engages the pinion 41,having a stop face and designed to make one revolution for each cycle ofthe machine. This pinion 41 is rigidly mounted upon a sleeve havingtoward its inner or left-hand end two adjacent pinions 500, 501, ofwhich the right hand one, 500, engages a broad intermediate pinion 502downward and to the rear of it, and the inner or left hand one, 501,engages in the case of addition with a small pinion 503 mounted upon thecarrier shaft 260 and feathered thereto and having a recess 505 at itsinner end designed to be engaged by a fork 395 on the upper end of theshifting arm 393, heretofore described, Figs. 6, 6*, 9. The intermediatepinion 502 in this series has a broader face than either the drivingpinion 500, engaging therewith, or the driven pinion 503, so that thepinion 503 feathered upon the carrier shaft, may either engage directlywith the driving pinion 501 or by use 'of the handle N at the left handof the machine, used to shift from addition to subtraction, it may bedisengaged from the driving pinion 501 and engage with the intermediatepinion 502. \Vhen in this position, it moves freely under the a tion ofthe intermediate gear 502 and without direct engagement with either ofthe two driving'pinions 500, 501 on the main sleeve. This arrangementprovides for obtaining either a forward or backward revolution of thesliding pinion 508 and the carrier shaft,

which thus make one revolution for each cycle of the machine and at atime beginning at the close ofthe oscillating movement of the item wheeldevices, the (iiIBCtlOll being determined by the adjustment for additionor subtraction.

\Vhat I- will here term the carryingwheels are a series of wheels 510Fig. 7, loosely mounted on hubs 522, fixed upon a sleeve 511, fixed onthe carrier shaft 260, and corresponding in number to theaccumulator-wheels 300 and meshing therewith and having on theirleft-hand faces projecting pins 512, which as they are revolved, as inthe case of addition, each engage with a nose on the upper and-forwardend of a series of triggerplates 513, Figs. 7 to 7, whose downward andrearward end 513 is adapted to enter a notch 514 in a spring-actuatedplate 515, having a reciprocating motion, and which I will here call aram. The reduced portion of this ram 515 enters a hole 516 in thecross-frame 517 of the machine and is impelled out and forward by thecompression spring 518. To the forward end of this ram is pivoted aplate 519, having at its extreme forward end a finger 520 and adjacentthereto and securely mountedupon it a segment of a gear 521, consistingof two teeth of like width and dimensions with the teeth of thecarryingwheels 510. The carrying-wheels are loosely mounted upon thecarrying-sleeve 511, by means of hubs 522, which are securely fixed tothe sleeve and revolve with it. These hubs 522 have at differentpositions upon their peripheries teeth 523. The location of these teethvary in position from the right to the left and vice versa, forming twospirals as the hub is revolved in relation to afixed point, the teeth onthe first hub to the right being comparatively close together, the teethon the second hub being somewhat farther apart and continuing in thisway through the series until the teeth on the extreme left-hand hub,corresponding spirally to the teeth on the right-hand hub, are exactlyin line. These spirals run in both directions from the right to left andleft to right, as it is necessary for addition to turn the sleeve 511and the hubs 522 in the opposite direction to that in which they areturned for subtraction. These spirals are partly shown in the drawings,Fig. 7. When a pin 512 on the carrying-wheels has engaged the upper andforward end of one of the triggers 513 sufficiently to release itsrearward end 5l3 from the notch 514 of the ram-plate 515. the pressureof the spring 516 in the barrel forces the ram-plate forward against arestraining-bar, 524, which is hung in a swinging yoke 525, pivoted at525 supported by the inner framework of the machine and having anoutwardly projecting arm 526, carrying a roller 526 adapted to engage acam 527 on a secondary

